Lewis and VSEPR for I3-

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Louise Zhuang
Posts: 31
Joined: Fri Sep 28, 2018 12:28 am

Lewis and VSEPR for I3-

Postby Louise Zhuang » Thu Nov 15, 2018 11:17 pm

What is the Lewis model and VSEPR formula for I3-?

spark99
Posts: 30
Joined: Fri Sep 28, 2018 12:18 am
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Re: Lewis and VSEPR for I3-

Postby spark99 » Thu Nov 15, 2018 11:23 pm

The VSEPR model should be linear. As for the Lewis structure, you should have one of the iodine being a central atom with one bond to each iodine atom. The central atom has 3 lone pairs, and the other two iodine atoms also have 3 lone pairs.

Xinyi Zeng 4C
Posts: 63
Joined: Fri Sep 28, 2018 12:18 am

Re: Lewis and VSEPR for I3-

Postby Xinyi Zeng 4C » Thu Nov 15, 2018 11:25 pm

If you meant triiodide (I3)^-, then it should have a linear structure as there are 3 lone pairs and two bonding pars surround the central I atom.
The Lewis structure will be [I-I-I]^-, with 3 lone pairs surround each I, so the center I will have an expanded octet structure.

Kailey Nichols 4B
Posts: 30
Joined: Fri Sep 28, 2018 12:28 am

Re: Lewis and VSEPR for I3-

Postby Kailey Nichols 4B » Thu Nov 15, 2018 11:30 pm

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